Types not compatible with Vue 2.6 in "strict" type checking mode

[rchl]

Version

3.6.4

Reproduction link

codesandbox.io

Steps to reproduce

1. Go to /src/main.js
2. Right click the Router import and select Go to Definition
3. Notice how there is an error in the definition of the type Component type

What is expected?

No errors with Vue 2.6

What is actually happening?

Error Generic type 'Component' requires between 0 and 4 type arguments.

---

Component has different amount of generic arguments in Vue 2.7 compared to Vue 2.6 so this code is not compatible with Vue 2.6. Since vue-router passes 5 arguments, this triggers a typescript error if strict option in tsconfig is enabled.

[rchl]

And there is also related issue (that was auto-closed but is valid) -- #3779

That is also an incompatibility with Vue 2.6 but in a different file.

[rchl]

The workaround is to stick to v3.5.4 which is the latest version compatible with Vue 2.6 types.